M 6.2 in Wallis and Futuna from 20 Nov 2017 18:51 UTC to 18:51

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 6.2M
Depth: 10 Km
Event Date: 20 Nov 2017 18:51 UTC
20 Nov 2017 06:51 Local
Exposed Population: No people within 100km
Source: PTWC pt17324001
Inserted at: 20 Nov 2017 18:56 UTC
INFORM Coping capacity of the alert score:
1.1 (Wallis & Futuna)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
PTWC 0 0 0
pt17324001 Scaled population (vector) 0 Max wave scenario 0m  
  C1 earthquake 1 Max wave realtime 0m  
  C2 earthquake 0      
  Country Vulnerability 0      
  INFORM_normalised 1      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1188514 0 20 Nov 2017 18:51 6.2M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:04 PTWC
1188517 0 20 Nov 2017 18:51 6M, 10km 3.73 N/A (in MMI>=VII) 0m (at 00:00) 00:19 NEIC
1188528 0 20 Nov 2017 18:51 6M, 6km 3.71 N/A (in MMI>=VII) 0m (at 00:00) 01:45 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Tsunami affected locations

Alert Date (UTC) Name Country Wave height (m)

See full locations list (RSS)


Initial conditions

Title: "163km SE of Mata-Utu"

Fault parameters

  • Latitude: -14.36
  • Longitude: -175.136
  • Length: 19 km
  • Width: 5 km
  • Magnitude: 6.2 M

Okada parameters:

  • Slip: .6 m
  • Strike: 88 (geogr angle: north=0, south=180)
  • Dip: 25 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -176.636, -15.86, -173.636, -12.86
  • Instead of Step -> use Cell size:.25 minutes

Sea Level

More information

  • Timeline:
    Tsunami calculations performed to this case, click here

For a full list of available products related to this event, please refer to the GDACS Resources page.